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How many grams of water can be cooled from 30 degrees C to 18 degrees C by the evaporation of 49g of water? (The heat of vaporization of water in this temperature range is 2.4kJ/g . The specific heat of water is 4.18J/k.
You are given 100g agarose (which makes a gel when dissovled in boiling water) and 100 ml buffer. Show how you would prepare 50 ml of a 1.2% agarose gel. weight and volume do not add up
If an artificial heart is capable of pumping at least 57,000,000 pints of blood before failure, how long, in years, will it probably last in a patient whose average heart rate is 72 beats per minute and an average stroke volume (the amount of bloo..
Determine the final concentration if A 134 ml portion of that solution is diluted using 147 ml of H 2 O?
If 25.0 ml of 0.150 M Ba(OH)2 is required to react completely with 45.0 ml HCl solution, what is the molarity of the HCl(aq)
A 6.38 mg sample of potassium hydrogen phthalate was dissolved in 50 mL of water and to use as a standardizing aging. If 36.5 mL of NaOH was required to reach the end point, what is the concentration of the solution in uM?
A sample of 87 mg of an ideal gas a 0.600 bar pressure has its volume doubled and its absolute temperature tripled. Find the final pressure.
Calculate the molarity of a solution of glycerol made by dissolving 38.000 mL glycerol at 15C(density: 1.2656g/mL) in enough water to make 230.00 mL of solution.
Thiobacillus thiooxidans plays an important role in the sulfur cycle in nature. The organism oxidizes inorganic sulfur compounds, and in the process, obtains energy for the synthesis of ATP. The oxidation of sulfite to sulfate:
Lakes that have been acidified by acid rain can be neutralized by liming, the addition of limestone (CaCO3). How much limestone (in kg) is required to completely neutralize a 4.3 billion liter lake with a pH of 5.5?
Consider the two gaseous equilibria- SO2(g) + 1/2O2(g) SO3(g) K1 2SO3(g) SO2(g) + O2(g) K2 The values of the equilibrium constants K1 and K2 are related
What mass of HCl is contained in 30.0ml of a solution solution which is 37.2 mass% HCl has a density of 1.19g/ml.
calculate (Triangle H degree R) for the following reaction- H2S(g) + (3/2)O2(g) ---> SO2(g) + H2O(g)
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